Polyelectrolyte gels: Ionic partners split up

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A new class of polyelectrolyte gels were designed that swell in low-polarity organic solvents to sizes more than hundred times their volume and enable a wider range of solvents to be efficiently absorbed. Polymer chains and counterions having four large covalently attached hydrocarbon and fluorocarbon groups prevent the ions from getting close enough to form strong ion pairs with each other in less-polar solvents. Neutral polyelectrolytes swell in chloroform suggesting that the counterions do not dissociate in the solvents and polymer chains play an important role in the gels absorption properties. The results show that chloroform is the best solvent for the polymer chains, indicating that the neutral polymers have dielectric constant 4.8. The results also show that ethyl acetate solvent do not swell in neutral and polyelectrolyte gel, which shows that it has unfavorable interaction with polymer chain used to make these gels.

Original languageEnglish (US)
Pages (from-to)401-402
Number of pages2
JournalNature Materials
Volume6
Issue number6
DOIs
StatePublished - Jan 1 2007

Fingerprint

Polyelectrolytes
Polymers
Gels
gels
polymers
Chloroform
Chlorine compounds
chloroform
Ions
Fluorocarbons
Hydrocarbons
fluorocarbons
Organic solvents
Permittivity
acetates
polarity
ions
hydrocarbons
permittivity
interactions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "A new class of polyelectrolyte gels were designed that swell in low-polarity organic solvents to sizes more than hundred times their volume and enable a wider range of solvents to be efficiently absorbed. Polymer chains and counterions having four large covalently attached hydrocarbon and fluorocarbon groups prevent the ions from getting close enough to form strong ion pairs with each other in less-polar solvents. Neutral polyelectrolytes swell in chloroform suggesting that the counterions do not dissociate in the solvents and polymer chains play an important role in the gels absorption properties. The results show that chloroform is the best solvent for the polymer chains, indicating that the neutral polymers have dielectric constant 4.8. The results also show that ethyl acetate solvent do not swell in neutral and polyelectrolyte gel, which shows that it has unfavorable interaction with polymer chain used to make these gels.",
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Polyelectrolyte gels : Ionic partners split up. / Colby, Ralph H.

In: Nature Materials, Vol. 6, No. 6, 01.01.2007, p. 401-402.

Research output: Contribution to journalArticle

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